write the mechanism of acid catalysed dehydration of ethanol to ethene
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1
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dehydration ch3 ch2oh. h2so4/heat. ch2= ch2 + h20
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Answer:
The mechanism of acid dehydration of ethanol to yield ethene involves the following three steps:
Step 1:
Protonation of ethanol to form ethyl oxonium ion:
Step 2:
Formation of carbocation (rate determining step)
Step 3:
Elimination of a proton to form ethene
The acid consumed in step 1 is released in Step 3. After the formation of ethene, it is removed to shift the equilibrium in a forward direction.
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